University of California

Chemical control of nematodes: Effective nematocides relatively few in number but available in several forms for field use on perennial and annual crops


Bert Lear
N. B. Akesson

Authors Affiliations

Bert Lear is Associate Nematologist, University of California, Davis; N. B. Akesson is Associate Professor of Agricultural Engineering, University of California, Davis.

Publication Information

Hilgardia 13(9):25-28. DOI:10.3733/ca.v013n09p25. September 1959.

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The degree of control required from nematocidal treatments, application methods and rates vary from crop to crop. Less than 10 nematocides are available commercially, and only three or four of those were introduced within the past 15 years. Some nematocides are distributed in the soil by diffusion in the gas or vapor state, by water solutions or emulsions, or by mechanically mixing the chemical into the soil. Whatever the method, the chemical must be dispersed through the soil to kill nematodes to the desired depth, without leaving a phytotoxic residue.

Lear B, Akesson N. 1959. Chemical control of nematodes: Effective nematocides relatively few in number but available in several forms for field use on perennial and annual crops. Hilgardia 13(9):25-28. DOI:10.3733/ca.v013n09p25

Also in this issue:

Plant nematology in California: State's: Crop losses led to first department for research in plant nematology to be established by experiment stations

Nematodes in plant quarantine: Detection of plant parasitic nematode infestations difficult because of complexity of possible causes of visible symptoms

Nematode structure and life: Wide range of life habits requires combination of characters for identification of parasites classified among nematodes

Field and vegetable crops: Wide ranges of crops and climatic conditions in California necessitate development of several diverse control programs

Nematodes in grape production: Distribution records show multiple infestations of two or more species of nematodes to be in most of California's vineyards

Citrus and avocado nematodes: Spread by nursery stock, by contaminated implements, and by water from irrigation canals that may drain infested land

Deciduous fruit and nut trees: Root-knot nematode on peach and root-lesion nematode on walnut cause serious problems for California orchardists

Nematodes on ornamentals: Root-knot, root-lesion, and more specialized or exotic forms may cause acute injuries in nursery, greenhouse, and garden

Biochemical relationships: Nematodes, plants, and linking soil components of complex problem of widespread, important pest of state's agriculture

Natural enemies of nematodes: Studies of complex soil environment aimed at favoring fungi and other organisms that limit plant nematode populations

Factors influencing the results of fumigation of the California red scale

Inheritance of resistance to hydrocyanic acid fumigation in the California red scale

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